Home / 142,360.12-196,466.88-78,703.84

Finding the Fourth Proportional to 142,360.12, 196,466.88 and 78,703.84

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Solution

The fourth proportional to 142,360.12, 196,466.88 and 78,703.84 is: 108,616.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,360.12 : 196,466.88 = 78,703.84 : x
  2. Step 2: Convert to fraction form
    142,360.12/196,466.88 = 78,703.84/x
  3. Step 3: Cross multiply
    142,360.12x = 196,466.88 × 78,703.84
  4. Step 4: Simplify right side
    142,360.12x = 15,462,697,888.82
  5. Step 5: Solve for x
    x = 15,462,697,888.82/142,360.12
  6. Step 6: Final answer
    x = 108,616.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.